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Vol. 175, Issue 7, July 2014, pp. 156-165




Study on the Light Scattering from Random Rough Surfaces by Kirrhoff Approximation

1 Keding Yan, 2 Shu Jiang, 1 Zhenhua Li

1 Department of Information Physics & Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
2 704 Institute, China Shipbuilding Industry Corporation, Shanghai, 200031, China

E-mail: yankeding168@gmail.com


Received: 7 June 2014 /Accepted: 30 June 2014 /Published: 31 July 2014

Digital Sensors and Sensor Sysstems


Abstract: In order to study the space distribution characteristics of light scattering from random rough surfaces, the linear filtering method is used to generate a series of Gaussian randomly rough surfaces, and the Kirchhoff Approximation is used to calculate the scattered light intensity distribution from random metal and dielectric rough surfaces. The three characteristics of the scattered light intensity distribution peak, the intensity distribution width and the position of peak are reviewed. Numerical calculation results show that significant differences between scattering characteristics of metal surfaces and the dielectric surfaces exist. The light scattering characteristics are jointly influenced by the slope distribution and reflectance of surface element. The scattered light intensity distribution is affected by common influence of surface local slope distribution and surface local reflectivity. The results can provide a basis theory for the research to lidar target surface scattering characteristics.


Keywords: Light scattering, Random rough surface, Kirchhoff approximation.


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